Envelop.



W. M.'CARY.

ENVBLOP.

APPLIUATION FILED JUNE 17, 1914.

1,1 17,4?9. v Patented Nov. 17, 1914.

unLLllaM M- CARY Summa TED sTATEs PATENT oEEToE.

WILLIAM M. CARY, OF "HOLYOKE, MASSACHUSETTS.

nNvELoP.

To all whom 'it may concern Be it known that I, WILLIAM M. CARY, a citizen of the United States,I residing at Holyoke, in the county of Hampden and State of Massachusetts, have invented certain new and useful Improvements in Envelops, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to improvements in envelops, and has foi` its primary object to provide an article of this character which is so constructed as to securely retain the contents thereof against probable loss in transit, but which can be readily opened and the contents removed without mutilating the envelop to such an extent as to preclude its subsequent use.

Broadly considered, the present invention contemplates the provision of an exterior pocket upon the back or rear side of the envelop at its open end, and a closure flap provided with an extension tongue adapted to be folded and inserted into said pocket to retain the flap in its closed position.

In its more specific aspect, the invention provides an envelop constructed from a paper blank cut by means of a suitable die `to produce side flaps on opposite edges of the body portion, end flaps constituting continuations of said body portion and a tongue on one of said end ilaps, said side flaps being provided with extensions on one of their ends projecting beyond the body ofthe envelop, said flaps and the extensions being folded relative to each other and with re- .convenient in practical use.

f With the above and other objects in view,

Patented N ov. 17, 1914.

Serial No. 845,697.

the invention consists in novel features of constructlon, combination, and arrangement of parts as will be hereinafter referred to and'more particularly pointed out in the speclfcation and claim.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawing, in which- Figure 1 is a plan View of the blank sheet from which the envelop is formed; Fig. 2 1s a rear face view showing the several flaps as they fold by machine to produce a pocket at the open end of the envelop; Figs. 3, 4, 5 and 6 are detail sectional perspective viewsillustrating the several steps in the folding and closing of. the envelop; and Figs. 7 and 8 are fragmentary elevations illustrating alternative forms of the inventlon.

Referring in detail to Figs. 1 to 6 inclusive of the drawing, A designates the blank from which the envelop is constructed. This blank is cut from a paper sheet of the desired texture and includes a main body portion 1, side flaps 2 and 3 at the opposite edges of said body portion, a bottom flap 4 at one end of said body portion and the closure flap 5 at the opposite end thereof. The flaps 2 and 3 are each provided with an extension 6 on one end projecting beyond the end of the body l for substantially the same distance as the flap The closure flap 5 may be of variour forms, but, as illustrated, the end edges 7 thereof at their junction with the body of the envelop are slightly spaced from the opposed edges of the extensions 6 on the side flaps 2 and 3, saidopposed edges of the closure flap and the extensions 6 being equidistantly spaced from the lines upon which the side iaps 2 and 3 are folded, said lines being designated by the numeral 8. The side Hap 3 is of slightly greater width than the flap 2 and the marginal edge of said flap 3 is adapted to lap over slightly upon the corresponding edge of the flap 2 when said flaps are folded over upon the body l of the blank. This marginal edge of the flap 3 is gummed throughout its length, as

indicated at 11. The opposite or outer faces of the extensions 6 of the flaps 2 and 3 are also gummed along their inner edges as indicated at 11 for a purpose which will later appear.

The closure flap 5 on one end of the body 1 of the blank is formed with a reduced tongue or extension 10. By now referring to Fig. 2 of the drawing, themanner in which the envelop is produced will be apparent. The flaps 2, 3, and 4 and the eX- tensions 6 are folded by a suitable machine. The flap 2 is first folded along the line 8 inwardly upon the body 1 and? the other side flap then similarlyfolded and adhesively secured along its vmaginal edge upon the edge of the flap 2. The bottom flap l is then folded over upon the lower ends of the flaps 2 and 3 and also adhesively secured thereto. The extension 6 of the flaps 2 and 3 are now folded downwardly upon said aps and the gummed end edges 11 of said extensions adliesively secured to the respective flaps. Thus it will be clearly apparent that a pocket is formed between these folded eX- tensions and the opposed upper end portions of the flaps 2 and 3. In this condition the envelop is delivered from the folding machine. The user after inserting the letter or other mailable matter into the envelop between the body 1 andthe aps'2 and 3, folds the closurezap 5 over the open end of the envelop and upon the extensions 6 of the flaps 2 and -3 which constitute the back wall of the envelop. The tongue 10 is now folded along lthe line 10 and forced upwardly under the extension 6 between the same andthe rear wall of the envelop. Thus, the closure flap 5 will be securely held in its closed position by confining the eX- tension or tongue -10 Athereof within said pocket. `This completely closed condition of the envelop is clearly illustrated in Fig.

\ 6 of the drawing.

In Fig. `7 of the drawing I have illustrated a slightly different form of the device, wherein theeXtension 6a of the side flap 3 is not only gummed Aon its inner en d edge as show n at 13, ina manner corresponding to the preferred form of the invention above described, but lthe extension upon the iiap 3 is also gummed upon its outer edge as indicated at 12. Thus, it will Y be seen that when these extensions are folded down upon the flaps, the moistened gummed edges 12 and 13 will adhere to said fiaps and produce spaced pockets instead of a single tongue receiving pocket. The closure flap 15 is this form of' the invention is therefore cut to provide tongues 14 for engagement in the respective pockets.

In Fig. 8 of the drawing, I have illustrated' still another lenvelop construction,

' wherein the blank is cut/to provide the body' portion 16'and narrow side Qap 17 and a wide side Hap 18. The marginal edge of this latter flap is gummed so that the same will adhere to the flap 17 upon which it is adapted to be folded. The wider iap 18 is provided upon its upper edge .with an eX- tension 21, which is gummed upon its end edges so that when the same is folded upon the flap 18, the tonguel receiving pocket is produced to accommodate the tongue on the closure flap 20. A bottom flap is, of course, formed on the lower end of the envelop body in the same manner as shown in Fig. 1 of the drawing.

From the foregoing description taken in connection with the accompanying drawing, it is believed that the construction, and several advantages of my improved envelop will be clearly and fully understood. The locking tongue on the closure flap when in` serted into the pocket formed by the folded extensions 6 operates to effectually retain said closure iap in its folded or closed position over the open end of the envelop.

This locking tongue being thus closely confined, will not work out ofthe pocket by shifting movement oragitation of the envelop during transit, while at the same time 10 therefrom. The envelop need not therefore be destroyed or so-mutilated as to preclude its subsequent use as a container or protecting envelop for papers or other articles.

It will thus be appreciated that I have produced a very simple and'inexpensive as well as highly serviceable envelop orv oontainer wherein the use of metallic fasteners is entirely dispensed with and one which may be very easily and quickly opened or closed. ,It will, of course, be obvious that the envelop may be constructed of paper of various grades or texture as well as of linen or other desired material.

What is claimed is:

An envelop constructed from a blank havingla body wall to constitute the front of the envelop and side flaps on the opposite edges of said body wall, one of said side iiaps being provided with'an extension on one of its ends, the longitudinal edge of said iap and the corresponding edge of said extension being gummed upon one face to adhere to the other side flap, when said flaps are folded over upon the bodyl of the envelop, said extension of said side flap being also gummed upon its other f ace and on the opposite edge thereof with respect to the first referred to gummed edge, whereby said eX- .tension when folded outwardly upon the side flap will permanently adhere thereto and form a pocket upon one end of said flap, and a ,closure flap on thecorresponding In testimony whereof I hereunto ax my signature in the presence of two Witnesses.

WILLIAM M. CARY.

"Witnesses:

ARCHIBALD FERGUSON, Jr., Gmo. H. ALLYN. 

